What library is used to write a GUI in Python3?

Question

Python

Which library is best for writing a graphical interface in Python, which would be as simple as Tkinter, but with the possibility of great customization. For example, blur for frames.

Answer 1

Basic Tkinter
You can install PyQt.
There are actually a lot of these libraries, but I like PyQt. Search the internet. Find one that you like
If something beautiful GUI can be done on PyQt

Answer 2

PyQT,
although Kivy was born with a new version literally in May